| Research Articles |
|
|
|
|
| Simulation of groundwater table dynamics based on Feflow in the Minqin Basin, China |
| Lan MA 1,2, XiaoMei WEI2, AnMing BAO3, ShiFei WANG3 |
1 Key Laboratory of Water Sediment Sciences, College of Water Sciences, Beijing Normal University, Beijing 100875, China;
2 College of Water Resources and Architectural Engineering, Northwest Sci-Tech University of Agriculture and Forestry, Yangling 712100, China;
3 State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China |
|
|
|
Abstract As groundwater table declination is an important factor resulting in degradation of eco-environment in the Minqin Basin, China, it is significant to investigate and understand the groundwater table dynamics in this area. According to the physical and geographical conditions of the Minqin Basin, a hydrogeological conceptual model and a mathematical model were established, and the mathematical model was figured out by using Finite Element subsurface Flow system (Feflow). Accurate hydrogeological parameters were acquired, and the spatio-temporal distribution dynamics of groundwater table for 1983–2001 were also simulated. The model performed well with a correlation coefficient of 0.977 and a mean error of 0.9768 m. The inflow and outflow of the groundwater system were predicted by time series analysis, and the groundwater table dynamics for 2011 were further acquired. Generally the groundwater table in the Minqin Basin would continue to decline. The groundwater table would decline during spring and summer irrigation, while it would rise during autumn-winter irrigation. The groundwater depression cones would expand with the increase of center depths. Therefore, regulatory measures should be taken to prevent the declination of groundwater table and improve the eco-environment of this area.
|
|
Received: 16 September 2011
Published: 06 June 2012
|
| Fund: The National Natural Science Foundation of China (50879071 and 40801103) and the Ph.D. Programs Foundation of the Ministry of Education of China (200800271029). |
|
Corresponding Authors:
|
|
|
| Chen L H, Qu Y G. 1992. Reasonable Exploitation and Utilization of Water Resources and Land Resources in Hexi Region. Beijing: Science Press.Dafny E, Burg A, Gvirtzman H. 2010. Effects of Karst and geological structure on groundwater flow: the case of Yarqon-Taninim Aquifer, Israel. Journal of Hydrology, 389: 260–275.E Y H. 2005. GIS-assisted modeling of groundwater spatial and tem-poral variations in groundwater levels and its influence on ecoenvi-ronmental change process in Minqin Basin, Northwest China. Ph.D. Thesis, Lanzhou: Lanzhou University.Fujimitsu Y, Fukuoka K, Ehara S, et al. 2010. Evaluation of subsurface thermal environmental change caused by a ground-coupled heat pump system. Current Applied Physics, 10(2): S113–S116.Huo Z L, Feng S Y, Kang S Z, et al. 2009. Application of ANN and FEFLOW model to simulate groundwater level variation in arid inland area. Journal of Hydraulic Engineering, 40(6): 724–728.Ma J Z, Wei H. 2003. The ecological and environmental problems caused by the excessive exploitation and utilization of groundwater resources in the Minqin Basin, Gansu province. Arid Zone Research, 20(4): 261–265.Ma L, Wei X M. 2006. Analysis on aberrance point of annual runoff serials in the downstream of Shiyang River. Agricultural Research in the Arid Areas, 24(2): 174–177.Ma X W, Li B G, Wu C R. 2002. Modeling the influence of land use on groundwater in oasis: the case of Minqin Oasis. Resources Science, 24(2): 49–55.Peleg N, Gvirtzman H. 2010. Groundwater flow modeling of two-levels perched karstic leaking aquifers as a tool for estimating recharge and hydraulic parameters. Journal of Hydrology, 388: 13–27.Russo S L, Civita M V. 2009. Open-loop groundwater heat pumps devel-opment for large buildings: a case study. Geothermics, 38(3): 335–345.Sun Y, Kang S Z, Li F S, et al. 2009. Comparison of interpolation methods for depth to groundwater and its temporal and spatial variations in the Minqin oasis of Northwest China. Environmental Modelling and Software, 24(10): 1163–1170. Wei H. 2004. Study of water resources carrying capacity in Minqin Basin. MSc Thesis, Lanzhou: Lanzhou University.Wei X M, Kang S Z, Su X L, et al. 2005. Impact of oasis agricultural development on the transforming relationship between surface water and groundwater in the Shiyang River Basin. Transactions of the Chinese Society of Agricultural Engineering, 21(5): 38–41.Yang J W, Radulescu M. 2006. Paleo-fluid flow and heat transport at 1575 Ma over an E–W section in the Northern Lawn Hill Platform, Australia: Theoretical results from finite element modeling. Journal of Geochemical Exploration, 89: 445–449.Zhao C Y, Wang Y C, Chen X, et al. 2005. Simulation of the effects of groundwater level on vegetation change by combining FEFLOW software. Ecological Modelling, 187: 341–351. |
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
